Reverse-flow prevention plug for container, the container,...

Details Reverse-flow prevention plug for container, the container,... Reverse-flow prevention plug for container, the container,...

2003-08-14

2011-10-25

Nicolas, Frederick C. (Department: 3754)

Dispensing

Outlet element operated by pressure of contents

Spring form, resilient or compressible flow controller or...

C222S105000, C222S212000, C222S213000, C222S386000, C222S386500, C222S491000

Reexamination Certificate

active

08042714

ABSTRACT:
A backflow preventing plug, a container, and a pouring device in which a container body and a plug member are provided separately in a simple shape, and tight-contact property between the plug member and a resilient member is enhanced to improve a backflow preventing function are provided.A backflow-preventing plug includes a resilient membrane formed of a thin film for defining a flow path having an inlet port and an outlet port, and a ball-shaped plug member retained in the flow path of the resilient membrane and formed with a spherical sealing surface for restricting fluid flow by coming into tight resilient contact with a middle portion of the resilient membrane. In a container, the backflow preventing plug is attached to a container opening of a container body accommodating contents. A pouring device includes, for example, a container holder accommodating and holding the container and allowing the container body to be pressurized from the container opening side to be contractingly deformed.

REFERENCES:
patent: 1987156 (1935-01-01), Paparello
patent: 3111703 (1963-11-01), Kaufman
patent: 3179300 (1965-04-01), Davidson
patent: 4342522 (1982-08-01), Mackles
patent: 4846810 (1989-07-01), Gerber
patent: 5005732 (1991-04-01), Penn
patent: 5033647 (1991-07-01), Smith et al.
patent: 5305786 (1994-04-01), Debush
patent: 5366115 (1994-11-01), Kersten et al.
patent: 5529213 (1996-06-01), Mack et al.
patent: 5836484 (1998-11-01), Gerber
patent: 5887753 (1999-03-01), Poolman
patent: 5967377 (1999-10-01), Glynn
patent: 6253967 (2001-07-01), Sperna Weiland
patent: 6286725 (2001-09-01), Gerber
patent: 6325253 (2001-12-01), Robinson
patent: 6357630 (2002-03-01), Sperna Weiland
patent: 6396395 (2002-05-01), Zielinski et al.
patent: 6536631 (2003-03-01), Nickels et al.
patent: 6662977 (2003-12-01), Gerber et al.
patent: 7490744 (2009-02-01), Matsumoto et al.
patent: 49-97245 (1974-08-01), None
patent: 144277/1972 (1974-08-01), None
patent: 58-125466 (1983-07-01), None
patent: 61-190447 (1986-08-01), None
patent: 2002-002755 (2002-09-01), None

Affiliated with

Also associated with

Rating

Reverse-flow prevention plug for container, the container,... does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Reverse-flow prevention plug for container, the container,..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Reverse-flow prevention plug for container, the container,... will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-4273946